“They keep on saying that I did something that I didn’t do,” Demario Lofton-Robinson told the Las Vegas Review-Journal during a jailhouse interview Wednesday.

Police arrested Lofton-Robinson, 18, and his brother a day after the Aug. 9 shooting death. On Tuesday, police booked Raekwon Robertson, 20, and Davontae Wheeler, 22, into the Clark County Detention Center.

Each of the four defendants faces a murder charge and several counts of robbery in the killing of Gabriel George Valenzuela, police said.

Just after midnight on Aug. 9, Valenzuela pulled into the driveway at his central valley home in the 5500 block of West Dewey Drive. He checked the mail before getting into a confrontation with four young men, police said.

He was shot at least three times and died at the hospital. Police said two shooters may have been involved.

During Wednesday’s interview at the county jail, Lofton-Robinson refused to answer multiple questions about the facts of the case without an attorney present.

He insisted that police manipulated their interviews with him and his 14-year-old brother, who he said has a mild form of autism. His brother may not have understood police questioning, Lofton-Robinson said, adding that his brother has the mental capacity of a 10- or 11-year-old.

Lofton-Robinson said he repeatedly told detectives he wanted an attorney present before answering questions. Police continued to ask leading questions, he said, and at one point told him he was not going to leave before he gave a statement.

The suspect said he eventually started lying to police as a way to speed up the interview process and leave. He said police took that as a confession.

“I never confessed to anything,” he said.

According to a police report, a witness jogging around the neighborhood saw four men in dark clothing standing in front of Valenzuela’s residence and “acting suspiciously.” The witness also saw an unoccupied white Mercury Grand Marquis.

The description of the vehicle matched that of a vehicle in a surveillance video at a convenience store that showed four male occupants entering the store a couple hours before the killing, the report said. Police used that information to make the arrests.

Lofton-Robinson said he was at the convenience store buying a cigarette with his younger brother, Robertson and Wheeler. After that, he said, he dropped Robertson and Wheeler off at a house to “meet some girls” they knew, and then took himself and his brother home.

Police documents indicate Lofton-Robinson told detectives he shot at Valenzuela once during a botched robbery. His brother told police he got scared and turned around as the group of four approached Valenzuela.

Valenzuela was a nursing student at the College of Southern Nevada and lived with his family at the West Dewey Drive address. His family was inside during the shooting and heard the gunshots, police Lt. Dan McGrath said.

When asked about Valenzuela on Wednesday, Lofton-Robinson appeared confused and said he did not know who that was.

How to navigate the trio of new freeway on-ramps from Martin Luther King Boulevard. (Mick Akers/Las Vegas Review-Journal)

Extreme weather closes Scenic Loop in Red Rock Canyon

High winds and flooding closed the Scenic Loop in Red Rock Canyon National Conservation area Thursday. Minor flooding across Highway 159 caused drivers to slow, but didn't close the road. (K.M. Cannon/Las Vegas Review-Journal) @KMCannonPhoto

Learning live-saving techniques in Stop the Bleed class

Leslie Shaffer, an AMR paramedic, shows how to control bleeding during a Stop the Bleed course at the Summerlin Library. The class is designed to teach anyone how to control and stop life-threatening bleeding. (Mia Sims/Las Vegas Review-Journal)

Tourists break out the umbrellas. But Brian Herting of Lincoln, Nebraska, dons shorts and a T-shirt, as he makes his way through downtown Las Vegas. (K.M. Cannon/Las Vegas Review-Journal) @KMCannonPhoto

The former Las Vegas home of Chicago mob enforcer, Tony Spilotro, is now for sale. Spilotro, who was portrayed by Joe Pesci in the film Casino, is the original owner of the home at 4675 Balfour Drive, built in 1974. (Samia DeCubas/Las Vegas Review-Journal)

UNLV forward Joel Ntambwe talks about his play at this point in the season. Video by Mark Anderson/Las Vegas Review-Journal

Sam Schmidt chats about hectic off-season

IndyCar team owner Sam Schmidt and lead driver James Hinchcliffe chat about the hectic off-season at the SpeedVegas high-performance driving facility outside of Las Vegas, Nevada, on January 10, 2018. (Ron Kantowski/Las Vegas Review-Journal)

Opportunity Village's Magical Forest added 1 million lights and a synchronized music show visible from all over the forest this year. The holiday attraction, which began in 1991, has a train, rides, food and entertainment along with the light displays. (Heidi Knapp Rinella/Las Vegas Review-Journal)

Siegel Cares delivers bagels to families in need

Since Thanksgiving, Mark Lenoir of Siegel Cares, has been delivering leftover Bagelmania bagels to families staying at the Siegel Suites.

Dan Barnson steps down

Arbor View football coach Dan Barnson stepped down Friday after 12 seasons at the helm. Under Barnson, the Aggies won 104 games and became one of the top programs in Las Vegas. The Aggies went 12-2 in 2018 and won a region championship for the first time in program history. Barnson loves Friday nights, but said the 12-month commitment was getting exhausting.

Lt. Ray Spencer gives an update regarding a homicide investigation that occurred in front of a bus stop near Fremont Street and Casino Center, involving a security officer and another male.

Krystal Whipple arrested in Arizona

Krystal Whipple, charged in the killing of a Las Vegas nail salon manager over a $35 manicure, is expected to return to Nevada to face a murder charge.

Alleged Las Vegas casino con man, who was on the run, appears in court

Mark Georgantas -- who entered a plea deal on a charge of stealing from people he met at Las Vegas casinos, but failed to show up for sentencing -- appearing in court after being captured in Utah. (K.M. Cannon/Las Vegas Review-Journal) @KMCannonPhoto

Memorial service for Kwavon’tia Thomas

Timika Thomas sings during a memorial service for her son, Kwavon’tia Gregory Thomas, at Unity Baptist Church in Las Vegas on Saturday, January 12, 2019. Kwavon’tia was shot and killed on Christmas Eve. (Chase Stevens/Las Vegas Review-Journal)

LVMPD Looking For Blue Bucket Bandit - VIDEO

On December 31, 2018 detectives with the LVMPD Northwest Area Command Patrol Investigations Section received a report of the theft of a surveillance camera from the front porch of a residence located in the area of West Lake Mead Boulevard and North Rampart Boulevard. The victim in this case became aware of other residents in the neighborhood who had been the victim of similar crimes.

16-year-old boy fatally shot in North Las Vegas

North Las Vegas police were investigating the fatal shooting of a 16-year-old boy on Wednesday, January 9, 2019, marking the department’s first homicide investigation this year. (Katelyn Newberg/ Las Vegas Review-Journal)

Las Vegas police piecing together details of fatal shooting

Six hours after the fact, Las Vegas homicide detectives worked to reconstruct the scene of a shooting early Jan. 7 that left one man dead in the southeast valley. (Rio Lacanlale/Las Vegas Review-Journal)

Las Vegas police searching for man in Christmas robbery

A man walked into a business about 2:35 a.m. Dec. 25 on the 5000 block of South Eastern Avenue, near East Tropicana Avenue, and “committed a robbery,” a police release said. Police wrote that a person followed him outside of the business, and the man pointed a gun at him. (Las Vegas Metropolitan Police Department)

Las Vegas police released video Monday in an effort to identify a man they said robbed a convenience store clerk at gunpoint last week.

Buffalo Wild Wings Hit and Run

Here's the surveillance of the hit-and-run crash in front of BWW, in which a woman repeatedly crashed into a manager's vehicle in a failed attempt to squeeze into a tight parking spot. She walks in, asks how long the wait is, then storms off after being told of the 10-minute wait time. Footage courtesy of manager Daniel Rees.

The newly formed DUI Strike Team made up of Las Vegas police officers and Nevada Highway Patrol Troopers have hit the streets looking for impaired drivers. (K.M. Cannon/Las Vegas Review-Journal)

Jury finds former corrections officers not guilty on all counts

Paul Valdez and Jose Navarrete, two former Nevada Department of Corrections officers accused of using unnecessary force on an inmate were both found not guilty on all charges after a jury deliberated less than 2 hours.

Henderson Constable appears in court

Earl Mitchell, the Henderson Constable indicted on four counts of theft and one count of fraudulent appropriation of property, appeared in court Thursday.

Former FBI agent recalls tragic case 20 years later

Timothy Blackburn robbed a Bank of America depository in December 1998 for more than $1 million — the largest bank robbery in Nevada’s history. After eluding authorities initially, Blackburn was caught and jailed at the North Las Vegas Detention Center. In August 1999, he escaped, guns blazing, with his wife’s help, and disappeared for weeks only to be found at an apartment near Boulder Highway. Former FBI Agent Henry Schlumpf, the lead on the case, remembers vividly the hostage situation that would end tragically. (Rachel Aston/Las Vegas Review-Journal)

Officer Shoots Suspect in Nye County - Bodycam

A Nye County Sheriff’s deputy shot and killed a man Thursday night. Jason Paul O’Bannon, 46, died after the altercation with police. Reports of a man firing a weapon outside his house brought police to the scene just after 8 p.m. Detective Wesley Fancher fired the shot that killed O’Bannon, police said.
O’Bannon had a “lengthy criminal history” in California and Nevada dating to 1988, according to police

Nye County sheriff news conference on officer-involved shooting

Nye County Sheriff Sharon Wehrly details the police response as officers came under fire Thursday when a man was shooting a rifle in his yard. When the man pointed a weapon at an officer, police opened fire. The man died.

Officer-involved shooting in Nye County

The Nye County Sheriff's Office gives information about a shooting in Pahrump on Thursday night after a man began firing shots outside of his home. (Nye County Sheriff's Office)

Law Enforcement Active Shooter Training Exercise

Multiple Las Vegas Valley law enforcement agencies held an active shooter drill at the Department of Public Safety’s Parole and Probation office on December 6, 2018. Officials set up the training exercise to include multiple active shooters, a barricaded suspect and multiple casualties. (Katelyn Newberg/ Las Vegas Review-Journal)

Dozier execution timeline

Scott Dozier was set to be executed July 11, 2018, at the Ely State Prison. Judge Elizabeth Gonzalez delayed the execution.

Las Vegas Metropolitan Briefing 18th street gang

Las Vegas Metropolitan briefs the media on the recent arrests made regarding the 18th street gang.

Las Vegas Metropolitan Briefing - 18th street gang

Las Vegas Metropolitan briefs the media on the recent arrests made regarding the 18th street gang.

The Mob Museum

Man shot in Las Vegas traffic stop had knife, police say

Police said the man fatally shot by an officer during a traffic stop in downtown Las Vegas had a “homemade knife.” Demontry Floytra Boyd, 43, died Saturday at University Medical Center from multiple gunshot wounds after officer Paul Bruning, 48, shot him during a traffic stop. Bruning pulled Boyd over on suspicion of driving recklessly at 7:41 a.m. near Sunrise Avenue and 18th Street.

Man shot, killed by Las Vegas police after traffic stop

Las Vegas police give a briefing after a man was shot and killed by an officer following a traffic stop. (Rio Lacanlale/Las Vegas Review-Journal)

Video of suspect in Home Depot parking lot shooting

A man who was injured in a Nov. 20 shooting in the southwest Las Vegas Valley died at a hospital Tuesday, the Clark County coroner’s office said.

Nevada Task Force 1 Dog Units Return

Four dogs and their handlers returned to the Las Vegas Valley on Thursday, November 29, 2018, after deploying to the Paradise, California wildfire last week. The dogs, trained in human remains detection, are part of Nevada Task Force 1, a Federal Emergency Management Agency urban search and rescue team. (Katelyn Newberg/ Las Vegas Review-Journal)

The parents of 8-year-old Levi Echenique speak after a woman who drove under the influence of marijuana and killed the boy was sent to prison.

3 Pahrump residents arrested on false imprisonment charges

James Thatcher, 28 of Pahrump, Chelsea Demille, 30 of Pahrump, and Sandra Wombles, 19 of Pahrump were all arrested after it was discovered that they were holding an adult female and male prisoners in their bedroom. (Nye County Sheriff's Office)

2 kids struck by gunfire in North Las Vegas shooting

On Saturday, Nov. 17, 2018, people opened fire into a residence in the 3600 block of Hamlin Place in North Las Vegas. Two kids were hit by gunfire and sent to the hospital with non-life threatening injuries, according to North Las Vegas police. Anyone with information is asked to call the NLVPD at 702-633-9111.